import os
# os.system(command)
# os.system("cmd")

# cmd = 'cmd'
# res = os.popen(cmd)
# output_str = res.read()   # 获得输出字符串
# print(output_str)
print("=============== 我执行了 ================")
import subprocess
# p = subprocess.Popen('ls -l', shell=True)
p = subprocess.Popen('index.exe', shell=True)


texts = input('>>>')
print(texts)

print("=============== 我执行了 ================")

class B:
    def start(self):
        val = getattr(self, 'tests')
        val('str1')
class A(B):
    def tests(self,str):
        print('test:')
        print(str)
    def start1(self):
        self.start();
b=A()
# b.start();
# print('visit_' + type(b).__name__)



list1 = ['physics', 'chemistry', 1997, 2000]
# print(list1[0])
# print(len(list1))
# for index in list1:
#     print(index);
# print(list1);
ss='ok'
tinydict = {"Alice": '2341', 'Beth': '9102', 'Cecil': ss}

# print(tinydict)
# print(tinydict['Alice'])

i=1;
while 1:
    i=i+1;
    # print(i);
    break

list2 = ['physics', 'chemistry', 1997, 2000]

# print(list2);

token={'Token':{'value_type':123,'value':123}}
# print(token)

# print(float('2.2'))

# num=5--2
num=5*-2
# print(num)

strs=' '
# print(strs.isalpha())


m=123;
ss1=(m==123);
ss2=(m!=123);
ss3=(m>100);
ss4=(m<200);
# print(ss1,ss2,ss3,ss4)


ss5=(m>=100);
ss6=(m<=300);
# print(ss5,ss6)

num=1;
age=10;
ss1=(num and age);
ss2=num or age;
ss3=not age;
# print(num and age,ss2,ss3)

# void=2
# if void in (1,2):
#     print('ok1')


sss='jj';
sss1=88;
# print(sss>sss1)

# flag=False;
# # flag=sss;
# print(flag)

# if flag:
#     print(flag)


name='name';
number=123456;
print(len(name))

def func():
    print('func')
fff=func();
print(fff);
